Figure 1From: Process of distant lymph node metastasis in colorectal carcinoma: Implication of extracapsular invasion of lymph node metastasis Histological examples of absence or presence of extracapsular invasion (ECI) at metastatic lymph node. (a,b) Case with present of ECI at metastatic lymph nodes; the tumor cells invade through the capsule of the lymph node. (c) Case with absent of ECI at metastatic lymph node; lymph node was contained metastatic foci, however, tumor cells did not invade the capsule of the lymph node.Back to article page